Transcription of BEE 473 Watershed Engineering Fall 2004 - Cornell …
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BEE 473 Watershed Engineering Fall 2004 - Cornell …
BEE 473 Watershed Engineering fall 2004 open CHANNELS The following provide the basic equations and relationships used in open channel design. Although a variety of flow conditions can exist in a channel (see next page), engineers most often design for steady-uniform flow conditions. Manning s and Chezy s equations are both valid. Although Chezy s equation is valid over a wider range of flows, the simplicity of Manning s equation usually makes it the method of choice: 2132 SRnAq= (m3 s-1) (1) where q is the steady discharge (m3 s-1), R is the hydraulic radius (m), and S is the channel slope; NOTE, this is a semi-empirical equation so units are important.
BEE 473 Watershed Engineering Fall 2004 OPEN CHANNELS The following provide the basic equations and relationships used in open channel design. Although a variety of flow conditions can exist in a channel (see next page), engineers most
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